Elizabeth de Burgh
Elizabeth de Burgh (1332–1363), fourth Countess of Ulster, was born at Carrickfergus Castle, the only child of William Donn de Burgh, Earl of Ulster. Her father's murder in 1333 left her countess at eleven months, while de Burgh kinsmen seized the Irish lands in the Burke Civil War.
She married Edward III's son Lionel of Antwerp at the Tower of London in 1342; Geoffrey Chaucer was her page. Their daughter Philippa, born in 1355, inherited Ulster and married Edmund Mortimer. She died in Dublin in 1363 and was buried at Bruisyard Abbey.